Available since: 2.0.0
Time complexity: O(log(N))
ACL categories:
@read
@sortedset
@fast
Returns the rank of member
in the sorted set stored at key
, with the scores
ordered from high to low.
The rank (or index) is 0-based, which means that the member with the highest
score has rank 0
.
Use ZRANK
to get the rank of an element with the scores ordered from low to
high.
member
exists in the sorted set, Integer reply: the rank of member
.member
does not exist in the sorted set or key
does not exist,
Bulk string reply: nil
.